109809369 has 6 divisors (see below), whose sum is σ = 158613546. Its totient is φ = 73206240.

The previous prime is 109809367. The next prime is 109809373. The reversal of 109809369 is 963908901.

It can be written as a sum of positive squares in only one way, i.e., 107744400 + 2064969 = 10380^2 + 1437^2 .

It is not a de Polignac number, because 109809369 - 2¹ = 109809367 is a prime.

It is a super-2 number, since 2×109809369² = 24116195040356322, which contains 22 as substring.

It is a zygodrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (109809361) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6100512 + ... + 6100529.

It is an arithmetic number, because the mean of its divisors is an integer number (26435591).

Almost surely, 2^109809369 is an apocalyptic number.

It is an amenable number.

109809369 is a deficient number, since it is larger than the sum of its proper divisors (48804177).

109809369 is a wasteful number, since it uses less digits than its factorization.

109809369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12201047 (or 12201044 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 109809369 is about 10478.9965645571. The cubic root of 109809369 is about 478.8650398557.

The spelling of 109809369 in words is "one hundred nine million, eight hundred nine thousand, three hundred sixty-nine".